{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x8bd323eb404d8947f09db362fea04b88b82f2e4f072d2cbf818e2823ed36ed9d",
    "signature": "0xa099398cbb971bfd97d7ecad56b19948baa49e2c824330d6c3a9b226f298d11472657cb53078261ea4f15e9cc0f9af1a81645297789a4724223a37f91a4bcb731b",
    "signer": "0xcBc71de214E83b3C3300D82C31f0FCF60E32F112",
    "userId": "358833562"
  }
}